Home / 85,516.50-118,045.68-76,548.18

Finding the Fourth Proportional to 85,516.50, 118,045.68 and 76,548.18

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Solution

The fourth proportional to 85,516.50, 118,045.68 and 76,548.18 is: 105,665.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,516.50 : 118,045.68 = 76,548.18 : x
  2. Step 2: Convert to fraction form
    85,516.50/118,045.68 = 76,548.18/x
  3. Step 3: Cross multiply
    85,516.50x = 118,045.68 × 76,548.18
  4. Step 4: Simplify right side
    85,516.50x = 9,036,181,960.86
  5. Step 5: Solve for x
    x = 9,036,181,960.86/85,516.50
  6. Step 6: Final answer
    x = 105,665.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.